Waves and Radiation
This page covers waves and radiation, crucial topics in AQA GCSE Physics space notes.
The page begins by explaining transverse waves, their components, and key terms such as amplitude, wavelength, and frequency. The wave speed equation is introduced, relating frequency and wavelength to wave speed.
Definition: Frequency is the number of waves that pass a fixed point in one second.
Longitudinal waves are then discussed, with sound waves given as an example. The page explains how sound waves propagate and introduces the concept of echoes.
Example: An echo is produced when sound waves are reflected off a surface.
The page covers the electromagnetic spectrum, listing different types of electromagnetic waves from radio waves to gamma rays. It also touches on the properties and uses of these waves.
Vocabulary: The electromagnetic spectrum is the range of all types of electromagnetic radiation.
The concept of refraction is introduced, explaining how waves change direction when passing from one medium to another. This is particularly relevant when discussing light waves.
Highlight: Refraction occurs when a wave passes from one medium to another with a different density.
The page concludes with an introduction to radiation, covering alpha, beta, and gamma radiation. It explains the penetrating power of each type and methods for stopping them.
Example: Alpha radiation can be stopped by a sheet of paper, while gamma radiation requires thick lead shielding.
This comprehensive coverage of waves and radiation provides students with essential knowledge for resolving forces GCSE Physics questions and understanding fundamental concepts in physics.
